StandarDesign/StandardDesign.ViewModels/LoginViewModel.cs

using GalaSoft.MvvmLight;
using GalaSoft.MvvmLight.Command;
using StandardDesign.IDataAccess;
using StandardDesign.Models;
using System.CodeDom;
using System.IO;
using System.Net.Sockets;
using System.Text.RegularExpressions;
using System.Windows;

namespace StandardDesign.ViewModels
{
    public class LoginViewModel : ViewModelBase
    {
        ILoacalDataAccess _localDataAccess;


        //ip
        public string ip;
        public string IP
        {
            get { return ip; }
            set { Set(ref ip, value); }
        }
        //Port
        public string port;
        public string Port
        {
            get { return port; }
            set { Set(ref port, value); }
        }

        //授权码
        public string _authorizeCode;
        public string AuthorizeCode
        {
            get { return _authorizeCode; }
            set { Set(ref _authorizeCode, value); }
        }

        //异常信息
        public string _failedMsg;
        public string FailedMsg
        {
            get { return _failedMsg; }
            set { Set(ref _failedMsg, value); }
        }

        //是否保存记录
        private bool _isRecord;

        public bool IsRecord
        {
            get { return _isRecord; }
            set { Set<bool>(ref _isRecord, value); }
        }


        //登录按钮
        public RelayCommand<object> LoginCommand { get; set; }
        public RelayCommand<object> SkipCommand { get; set; }


        public LoginViewModel(ILoacalDataAccess localDataAccess)
        {
            _localDataAccess = localDataAccess;

            if (File.Exists("temp.txt"))
            {
                string info = File.ReadAllText("temp.txt");
                this.IP = info.Split("|")[0];
                this.Port = info.Split("|")[1];
            }
            if (!IsInDesignMode)
            {
                LoginCommand = new RelayCommand<object>(DoLogin);
                SkipCommand = new RelayCommand<object>(SkipLogin);
            }
        }
        private void DoLogin(object obj)
        {
            try
            {
                // 根据选项进行信息记录
                if (IsRecord)
                {
                    string info = $"{this.IP}|{this.Port}";
                    File.WriteAllText("temp.txt", info);
                }
                else
                {
                    if (File.Exists("temp.txt"))
                        File.Delete("temp.text");
                }

                if (string.IsNullOrEmpty(IP))
                {
                    throw new Exception("IP地址为空!");
                }
                else if (!ValidateIPAddress(IP))
                {
                    throw new Exception("IP输入有误!");
                }
                else if (string.IsNullOrEmpty(Port))
                {
                    throw new Exception("端口号为空!");
                }
                else if (!ValidatePortAddress(Port))
                {
                    throw new Exception("端口号输入有误!");
                }
                else
                {
                    (obj as Window).DialogResult = true;
                }
            }
            catch (Exception ex)
            {
                FailedMsg = ex.Message;
            }
        }

        /// <summary>
        /// 跳过连接
        /// </summary>
        /// <param name="obj"></param>

        private void SkipLogin(object obj)
        {
            (obj as Window).DialogResult = true;
        }


        /// <summary>
        /// 校验Ip
        /// </summary>
        /// <param name="ipAddress"></param>
        /// <returns></returns>
        public static bool ValidateIPAddress(string ipAddress)
        {
            Regex validipregex = new Regex(@"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$");
            return (ipAddress != "" && validipregex.IsMatch(ipAddress.Trim())) ? true : false;
        }

        /// <summary>
        /// 校验端口号
        /// </summary>
        /// <param name="prtAddress"></param>
        /// <returns></returns>
        public static bool ValidatePortAddress(string prtAddress)
        {
            Regex validipregex = new Regex(@"^(\d|[1-9]\d{1,3}|[1-5]\d{4}|6[0-4]\d{3}|65[0-4]\d{2}|655[0-2]\d|6553[0-5])$");
            return (prtAddress != "" && validipregex.IsMatch(prtAddress.Trim())) ? true : false;
        }

    }

}